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Cornerstone · Grades 3–5 Keystones #1 15 June 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 June 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 4⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 8x - 11 = 37

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 1:2

    Answer: 15 and 30
  5. 5. Statistics Mean

    Find the mean of: 9, 9, 13, 9, 20

    Answer: 12

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